This is breakout board provides ability to evaluate TPS61291 Low IQ Boost Converter with Bypass Operation mode and allows an user-selectable output voltage of 2.5V, 3V or 3.3V via the VSEL pin.

Bypass mode/boost mode is controlled via the EN pin.

Features

• Input Voltage Range 0.9V to 5V
• 15nA typical Quiescent Current in Bypass Mode
• 5.7µA typical Quiescent Current in Boost Mode
• Bypass Switch from VIN to VOUT (by default, ENable pulled-down via R1 100K Ohm)
• Pin Selectable Output Voltages: 2.5V, 3V or 3.3V
• Optional (R2) resistor for 3.3V Output Voltage (VSEL=GND)
• Large input 100uF capacitor (C1) added to buffer the supply voltage.
• Internal Feedback Divider Disconnect (Bypass Mode)
• Controlled Bypass Transition Prevents Reverse Current into Battery
• Power-Save Mode at Light Loads
• Over-Temperature Protection
• Redundant Over-Voltage Protection

Technical details:

• DC/DC Boost Converter: Texas Instruments TPS61291
• PCB size: 22 x 24 mm
• Designed and Assembled in London, UK

Headers Sets:

• VERTICAL: 2x Harwin M20-9990245 Gold 0.1" (2.54mm), 2x Harwin M20-9990345 Gold 0.1" (2.54mm), 2x 3M jumpers